Question

The ratio between the angles of a quadrilateral is 7 : 2 : 5 : 6 respectively. What is the sum of double the smallest angle and half the largest angle of the quadrilateral?

Answer 1

5x + 7x + 2x + 6x = 360

20 x = 360

x = 360 / 20

x = 18

largest angle = 7x = 118

half of it = 58

smallest angle = 2x = 36

double small angle = 72

sum =1 9 0